-96- 



Geologie. 



Calvert, W. R. : Land Classification, its Basis and Methods. Goal Lands. 



(Econ. Geol. 1911. 6. 473—492. 4 Fig.) 

 Campbell, M. R. : A Plea for Revision of the Rules of the American 



Chemical Society Governing the Proximate Analysis of Coal. (Econ. 



Geol. 1911. 6. 562—567.) 



Nord-Amerika. Mexiko. 



Henning, Ch. L. : Die Erzlagerstätten der Vereinigten Staaten von 

 Nordamerika mit Einschluß von Alaska , Cuba , Portorico und den 

 Philippinen nach Geschichte, Form, Inhalt und Entstehung. Stuttgart 

 1911. 293 p. Mit 97 Fig. u. Karte im Text. 



Ransome, F. L. : Geology and Ore Deposits of the Breckenridige District. 

 Colorado, (ü. S. Geol. Snrv. Prof. Pap. 75. 1911. 187 p. 33 pls. 

 29 Fig. Washington.) 



Fenneman, N. M. : Geology and mineral resources of the St. Louis 

 Quadrangle Missouri-Illinois. (U. S. Geol. Surv. Bull. 438. 73 p. 6 pls. 



I Fig. Washington 1911.) 



Phalen, W. C. and M. Lawrence: Mineral resources of Johnstown, 

 Pennsylvania and vicinity. (U. S. Geol. Surv. Bull. 447. 142 p. 

 7 pls. 22 Fig. Washington 1911.) 



Moffit, F. H. and S. R. Capps: Geology and mineral resources of the 

 Nizina district, Alaska. (U. S. Geol. Surv. Bull. 448. 111 p. 12 pls. 



II Fig. Washington 1911.) 



Paige, S.: Mineral resources of the Llano-Burnet region, Texas, with 

 an account of the pre-Cambrian geology. (U. S. Geol. Surv. Bull. 

 450. 103 p. 5 pls. 22 Fig. Washington 1911.) 



Bancroft, H.: Reconnaissance of the ore deposits in nothern Yuma County, 

 Arizona, (ü. S. Geol. Surv. Bull. 451. 130 p. 8 pls. 21 Fig. Wa- 

 shington 1911.) 



Paige, S., W. H. E m m o n s and F. B. Laney: Contributions to economic 

 geology (short papers and preliminary reports) 1910. I. Metals and 

 nonmetals except fuels : Copper. (U. S. Geol. Surv. Bull. 470— C. 

 1911. 47 p. 1 pls. 12 Fig. Washington.) 



Butts, C, T. N. Dale, G. B. Richardson, E.W. Shaw, A. Deussen 

 and E. F. Burcha r d : Contributions to economic geology (short 

 papers and preliminary reports) 1910. I. Metals and nonmetals except 

 fuels: Structural materials. (U. S. Geol. Surv. Bull. 470— G. 1911. 

 134 p. 4 pls. 9 Fig. Washington.) 



Brooks, A. H. and others: Mineral resources of Alaska. Report on progress 

 of investigations in 1911. (U. S. Geol. Surv. Bull. 480. 1911. 333 p. 

 13 pls. 19 Fig. Washington.) 



Mineral Resources of the United States. Calendar Year 1909. Parti. 

 Metals. (U. S. Geol. Surv. 617 p. 4 Fig. 1 pl. Washington 1911.) 



MineralResources of the United States. Calendar Year 1909. Part II. 

 Nonmetals. (U. S. Geol. Surv. 942 p. 6 Fig. Washington 1911.) 



